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English - English (Wordnet) dictionary (also found in English - Vietnamese, )
energy
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Noun
  • the federal department responsible for maintaining a national energy policy of the United States; created in 1977
  • any source of usable power
    • the DOE is responsible for maintaining the energy policy
  • a healthy capacity for vigorous activity
    • jogging works off my excess energy
    • he seemed full of vim and vigor
  • an imaginative lively style (especially style of writing)
    • his writing conveys great energy
    • a remarkable muscularity of style
  • enterprising or ambitious drive
    • Europeans often laugh at American energy
  • forceful exertion
    • he plays tennis with great energy
    • he's full of zip
  • (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs
    • energy can take a wide variety of forms
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